industrial overlord

Chapter 75 Electronic Enthusiasts

No matter how Lin Zhenhua turned around and asked around, Lin Fanghua always blushed and refused to say why the head teacher wanted to summon her parents.Of course, Lin Zhenhua guessed at the first time whether his sister had a puppy love, but after asking a few words, he didn't think it was too likely, because his sister's expression was obviously more happy than frightened. Parents, this is a very sad thing.

After dinner, the brother and sister each rode a bicycle and went to the county together.As for the county, Lin Zhenhua only had some memories inherited from that body in the past, and he had never been there before.In fact, the school held a parent meeting last semester, but Lin Zhenhua happened to be on a business trip at the time, and Lin Fanghua asked Yang Chunshan to take the role of parent.

Lin Fanghua took her brother to the grade group office, knocked on the door and entered.There was only one middle-aged male teacher in the office, sitting at the desk and looking at something in his hand with a magnifying glass. When he saw Lin Fanghua coming in, he put down the thing in his hand and said hello: "Lin Fanghua is here, this is... ..."

"Mr. Wei, this is my brother, Lin Zhenhua." Lin Fanghua introduced to the teacher, then turned around and said to Lin Zhenhua, "Brother, this is our homeroom teacher, Teacher Wei."

"Comrade Xiaolin, my name is Wei Jingwen." The homeroom teacher stood up, shook hands with Lin Zhenhua, and introduced himself.

After the guests and hosts were seated, Lin Fanghua asked Wei Jingwen for instructions, then left the office and went back to the classroom for self-study.Lin Zhenhua watched his sister walk away, then turned around and asked, "Mr. Wei, I heard from Xiaofang that you have something to do with me. Did Xiaofang get into some trouble again?"

This is probably what all parents would say after meeting their teachers. Lin Zhenhua vaguely remembered that when their parents were still alive, they went to school to meet their teachers and asked the same question: Did Xiaohua get into trouble again?
When Wei Jingwen heard Lin Zhenhua's question, he quickly waved his hands: "No, no, Comrade Xiaolin, you misunderstood. I invited you here to introduce your experience to the parents of other students during the parent-teacher meeting."

"Experience?" Lin Zhenhua was a little confused.

"That's right." Wei Jingwen said with a smile on his face, "This time, Lin Fanghua got No. 1 in the whole class and No. 3 in the whole grade. What is particularly rare is that Lin Fanghua's grades were not outstanding when she entered school, and she was still relatively backward compared with other students. In just one year, Lin Fanghua's grades ranked first in the world The rank of the grade has risen from more than 300 to the third place, which is simply a miracle that Fenghua Middle School has never seen since the establishment of the school."

"That's it, that's really great." Lin Zhenhua breathed a sigh of relief, and at the same time he was really happy for his sister, but he had to hurry up and say politely: "This is mainly because the teacher taught me well. Parents, thank you teachers here."

Lin Zhenhua still knows the reason for Lin Fanghua's rising academic performance.Lin Fanghua has always been considered a relatively well-behaved child, and his grades in elementary school were not bad.Later, something happened to his parents, and he, the elder brother, didn't make people feel at ease, so Lin Fanghua's studies gradually went downhill.After Lin Zhenhua returned from serving as a soldier, he changed to another person. On the one hand, he could take care of Lin Fanghua's life so that she could study with peace of mind. On the other hand, he could also serve as Lin Fanghua's tutor and help her solve various learning difficulties.In this way, Lin Fanghua's grades naturally rose by leaps and bounds.

"Teachers are the same for all students. The main reason why Lin Fanghua's grades can rise so quickly is from her family. I heard from Lin Fanghua that you often help her with her homework at home, isn't that true? " Wei Jingwen asked.

"Uh... I just tutor her occasionally." Lin Zhenhua said modestly.

"However, I heard that your own education is only a junior high school graduate. How can you guide a sophomore student? Besides, I also asked your junior high school head teacher. He said that when you were in junior high school, your grades didn't seem to be very good. Ideal." Wei Jingwen asked bluntly.

The county middle school is a combination of high school and junior high school, so the high school teachers can also know about Lin Zhenhua's bad deeds in junior high school.If Lin Fanghua hadn't performed amazingly, I'm afraid everyone would have forgotten Lin Zhenhua, but Lin Fanghua became a dark horse, rushed into the sight of the teachers, and made Lin Zhenhua the object of everyone's research.

For his bizarre knowledge, Lin Zhenhua has always had only one explanation, that is, he had an adventure when he was a soldier.He faltered and told Wei Jingwen again about self-taught and rightist professors, and Wei Jingwen, like other people who heard this myth for the first time, was full of envy: "Oh, This is really a very lucky thing. However, it should also be said that you are eager to learn and make progress. In fact, such opportunities exist for many people, but most people do not cherish them."

Lin Zhenhua nodded again and again: "Yes, yes, Teacher Wei is very right. I am a person who likes new things, so you know..."

Wei Jingwen accepted Lin Zhenhua's explanation, and then talked about the parent meeting.After chatting for a few words, Wei Jingwen finally found out that Lin Fanghua's model may be difficult to replicate, because parents who could guide their children in the second year of high school were almost rare in those days, and occasionally some parents had gone to technical secondary school or even university Yes, its level is limited to guiding children who are at the middle level. If you want your children to be top-notch in their grades, the premise is that the parents themselves must have been top-notch talents.

"Sorry, Teacher Wei, I really can't help you." Lin Zhenhua said apologetically.

"It's okay. If you don't introduce your experience in this area, at least you should show it at the parent meeting. The brother and sister who lost their parents, the elder brother supports the younger sister's study so much that the younger sister's grades rise rapidly. This in itself is also a good example. .” Wei Jingwen said.

After the two of them chatted, Lin Zhenhua got up to leave, and accidentally saw the gadget he was studying on Wei Jingwen's desk, and couldn't help thinking, pointing to the gadget and asked: "Mr. Wei, what did you study just now?" That, what is it?"

"Oh, it's an integrated circuit." Wei Jingwen said, "Why, Comrade Xiaolin, do you have research on this?"

Lin Zhenhua said: "I can't say about the research, I just have contact with it. What kind of chip is yours?"

Wei Jingwen became emotional. He carefully held the chip, handed it to Lin Zhenhua, and said, "This is a chip imported from the United States, called NE555."

In fact, Lin Zhenhua recognized the appearance of NE555 at a glance just now. There were very few integrated circuit models back then, and the appearance of various chips was very different. Lin Zhenhua is unlikely to admit his mistake.

Seeing Wei Jingwen holding the chip like holding a treasure, Lin Zhenhua couldn't help but want to laugh.He brightened it carefully, and said in surprise: "Mr. Wei, isn't this a waste chip? Two legs have been broken."

"That's right!" Wei Jingwen said regretfully, "I don't know who was so careless and broke the two pins. However, if this foot hadn't been broken, it wouldn't have fallen into my hands I just broke these two legs, and I bought it at a component store, and it cost 2 yuan."

"But, you broke your foot, what did you buy it for?" Lin Zhenhua asked puzzled.

"Xiao Lin, sit down, and I'll tell you." Wei Jingwen finally found a friend, and no matter how much Lin Zhenhua knew, he quickly pulled Lin Zhenhua to sit down.He held a pair of tweezers, pointed at each pin of NE555, and said: "Xiaolin, look, it turned out to be eight pins, and the two broken ones are the high-level threshold and the other is the low-level reset. For the high level threshold, there is still a little connector left. I am sure to solder it with a wire, and it can still be used. The low level reset pin is broken at the root, and it is a bit difficult to solder. I'm afraid that the soldering process will destroy the circuit inside. However, in many circuits, this script is also to be connected empty, so it is not a big problem if it is missing."

Lin Zhenhua's eyes lit up: "Mr. Wei, do you know circuit design?"

Wei Jingwen sighed lightly, and said, "I don't know much about it, it's just a hobby. When I was in college, I studied electronic engineering."

"Which school did you graduate from, and what level?"

"Beihang University, Class of [-]."

"The [-]nd class of Beihang University, teaching high school here?" Lin Zhenhua gasped. Could it be that there are so many talents in China?

Wei Jingwen smiled teasingly, and said: "It's not surprising that such a thing. My family has a relatively high status, and I can be assigned to a middle school, and I haven't been fighting in these years, which is very good. Actually, I also I really like teaching, and I can cultivate a group of promising children, this life is enough."

Lin Zhenhua directly filtered Wei Jingwen's disheartened remarks, and said straightforwardly: "Mr. Wei, I am currently working in the technical department of Hanhua Machinery Factory. We are working on a new product, but it involves electronic circuits. For the control part, there is no suitable candidate yet, I wonder if you can help."

"Oh? What kind of circuit?" Wei Jingwen asked.

"The automatic control system of the retractable gate used at the entrance of the unit." Lin Zhenhua said.

"It's very simple, isn't it just forward and backward?" Wei Jingwen said disappointedly.

Lin Zhenhua said: "In addition to forward and backward, we also hope to be able to perform remote control, and at the same time have the function of automatically avoiding pedestrians and vehicles."

"This is a little complicated, but it is also a solved problem."

"We hope to use integrated circuit control, and the main chip is NE555." Lin Zhenhua threw out the biggest bait.

"Do you have 555 circuit?" Wei Jingwen was really hooked.

Lin Zhenhua reached into his trouser pocket and took out a chip that was exactly the same as Wei Jingwen's, but the quality was much newer than Wei Jingwen's.This is the NE555 he brought to show Hu Yang in the afternoon. He put it in his pocket when he left the workshop and forgot to take it out. It just came in handy at this time.

"Oh my god!" Wei Jingwen's eyes were about to burst into flames. He almost snatched the chip from Lin Zhenhua's hand by snatching it, and then held it in his hand, watching it carefully, mouth He kept muttering, "It turned out to be a brand new chip! What a waste of money, such a precious chip, you, you, you, you just put it in your pocket!"

Lin Zhenhua listened to Wei Jingwen's condemnation with a smile, but didn't say a word.When Wei Jingwen finally calmed down and felt sorry for his gaffe, Lin Zhenhua said leisurely: "Mr. Wei, if you promise to help us solve the problem of the control circuit, the chip in your hand will be in vain. Here it is for you. What do you think?"

"Yes!" Wei Jingwen agreed without hesitation, "Comrade Xiaolin, just ask for it. No matter how complicated the circuit is, I promise to design it for you."

(End of this chapter)